Electric annunciator



(No Mode-1.) 3 Sheets-Sheet 1. A. L'YMAN.

ELEGTRIG ANNUNGI'ATOR. I

No. 488,567. IX Patented Dec. 27, 1892.

(No Model.) 3 She efB -Sheeat-Z.

. A. B. LYMAN. ELECTRIC ANNUNGIATOR.

'No.'488,567 I PatentedD'eoZ'l, 1892.

ITNEEBE'SI (No Model.) 3 Sheets-Sheet 3.

A.. B. L-YMAN. ELECTRIC ANNUNGIATOR.

ITNEESEEI INVENTUR- was c0w wuurauwm, WASHINGTON u c UNTTnn STATES?ATENT Fries.

ADELVIN B. LYMAN, OF CLEVELAND, OHIO.

ELECTRIC ANNUNCIATOR.

SPECIFICATION forming part of Letters Patent No. 488,567, dated December27, 1892.

Application filed October 26,1891.

To all whom it may concern.-

Be it known that I, ADELVIN B. LYMAN, a citizen of the United States,residing at Oleveland, in the county ofCuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Electric Annunciators,of which the following is a full, clear, and complete description.

The-nature of my invention relates to an annunciator so constructed asnot to require the resetting of the needle after the bell has rung. Themechanical parts being so arranged that the needle always indicates thelocation of the caller itself. The annunciator is also small andinexpensive as compared with those in ordinary use.

That the invention may be seen and fully understood by others skilled inthe art, reference will be had to the following specification andannexed drawings forming part thereof.

Figure 1. is a front elevation of my improved annuneiator, showing theconnections. Fig. 2. is a perspective view, in elevation showing theannunciator disconnected, with the cover removed and a portion of thebell broken away for the purpose hereinefter shown. Fig. 3. is avertical section through the middle of the annunciator as indicated bydotted line w. :r. Fig. 1. Fig. 4 is a front view on an enlarged scaleof avibrating hammer and rheotome. Fig. 5 is a diagram of the electricalcircuits and connections.

Like letters and numerals of reference designate like parts in thedrawings and specification.

Only two pairs of electro magnets on and b Fig. 2, are used, themechanical arrangement being such as to cause the said magnets toperform two separate duties at the same time, viz: to ring the bell c.by attracting the armature d. and causing the bellhammer e orf as thecase may be, to strike the hell 0. and at the same time attract thepivotal armature g. which causes the pin h, attached to said armature gto come in contact quickly with one of the arms 2' or i Fig. l. of thepointer j. The pointer j. is so pivoted at k. that a sudden blow of thepin it. will throw the pointer head Z beyond the center of gravity andcause it to point and remain at the name on Serial No. 409,769. (Nomodel.)

In order to ring the same hell with two dif-.

ferentpairs of magnets it is necessary to have a double bell hammer e.and f. so as to strike the bell on either side separately. It is alsonecessary to have two distinct circuit breaking, and closing springs onthe same armature as shown at 0. 0' Fig. 4. The springs 0. and 0.operate in connection with the insulated contact points or screws 10 andq Fig. 2. thus causing the vibrating stroke of the hammer on the bell.The springs 0 o. are normally in contact with the screws 19 grespectively. When the circuit is closed at a push button through one ofthe magnets, the armatureis attracted, and the spring is drawn away fromits screw, thereby breaking the circuit and releasing the armature:whereupon it withdraws from the magnet, and the spring is brought backagainst the screw, closing the circuit and again causing the armature tobe attracted. This action keeps the armature vibrating so long as thecircuit is closed through either pair of magnets. The screws 19 and qcan be so adjusted as to ring the bell with a quick, rapid vibration orwith a-slow vibration thus enabling a person to distinguish the locationof the call by the sound of th bell without reference to the indicator.For instance: If the screw 10. be so adjusted to cause a slow vibrationand a call comes from the front door or side door as the case may be, itis readily distinguished without reference to the dial. While this isnot necessary it is in many cases a great advantage and convenience.

If the pointer j, is pointing to Front Door on thedial Fig. 1. and thepush button r or Front Door button ispushed, the bell rings and thepointer remains at Front Door. on dial. But should the button r. or SideDoor.

button be pushed the pointer j, will be thrown over and point to SideDoor on the dial (as shown by dotted line j. Fig. 1.) and vice versa.

When it is desired to have a third call,say, Dining Room, this sameapparatus can be connected by a separate battery. The push button T isconnected with the binding post J of the battery A by the wire 1 andwith the binding post G by the wire 2, from which the circuit extendsthrough the wires 3 and 4, the electro magnets 19 b, and the wire 5, tothe binding post D, and from the post D,by the wire 6 to the post E,which is connected with the binding post I of the battery A, by the wire'7, thus completing the circuit. When the circuit is closed the magnetbecomes energized and attracts the armature d causing the bell hammer tostrike the bell just once or what is known asasingle stroke bell,therebydistinguishing the dining room call by sound of bell alone.

The push button 0" is connected with the binding post K of the batteryB, by the wire 8, and with the binding post D by the wire 9, from whichthe circuit extends through the wire 5, electro magnets b b and the wire4:, to the platinum point of the screwp which makes contact with thespring 0. The circuit continues through the screw 19 and spring 0 to thepost F by way of the wire 10, and the wire 11 connects the post F withthe binding post L, of the battery 13, thus completing the circuit. Thepush buttonris connected with the binding post K of the battery B by thewires 12 and 8, and with the binding post H by the wirel3,t'rom whichthecircuitextends through the wire 14, electro magnets a, a and the wire 15to the platinum point of the screw g, which is in connection with thesoft iron standard. The circuit continues through the screw q and spring0' to the post F by way of the wire 10, and the wire 11 connects thepost F with the binding post L of the battery B, thus completing thecircuit.

What I claim and desire to secure by Letters Patent is.

1. An electric annunciator having a pair of oppositely disposed magnets,a vertical armature free to oscillate between the poles of said magnetsand pivoted at its lower end, a pin on said armature, and a pointerpivoted on a support independent of the armature below its center ofgravity, and arranged to be actuated by said pin when the armature is0scillated, substantially as described.

2. In an electric annunciator, the combination with a pair of oppositelydisposed magnets, having laterally extended pole pieces, of a vibratingbell hammer and an oscillating armature arranged vertically between saidpole pieces, andpivotally supported at their lower ends, a pin on saidarmature, and a pointer pivoted on a support independent of the armaturebelow its center of gravity and having a forked end, within which saidpin plays to actuate the pointer by sudden contact with the arms of saidfork, substantially as described.

3. In an electric annunciator,apair of magnets and push buttonsconnected in multiple are, with a vibrating armature common to bothmagnets and forming a part of each circuit, and an additional batteryand push button connected directly with one of said magnets,substantially as described.

In testimony whereof I aftix my signature in presence of two witnesses.

ADELVIN B. LYMAN.

Nitnesses:

W. H. BURRIDGE, L. F. GRIsWoLn.

